81 Gb/s Dual-Polarization Discrete Eigenvalue Transmission Based on Nonlinear Fourier Transform

We investigated dual-polarization (DP) discrete eigenvalue transmission and proposed shifting the soliton train in one polarization by half a symbol period relative to that in the other polarization. Simulation results are conducted to illustrate its advantages over conventional schemes. Experiments of net 81 Gb/s dual-polarization discrete eigenvalue transmission over 650 km are also demonstrated with the help of DP multi-symbol linear minimum mean-squared error (DP-MS-LMMSE) filters for eigenvalues and b(
${\lambda }$
)-coefficients.